Home / 100,735.42-139,019.58-58,285.74

Finding the Fourth Proportional to 100,735.42, 139,019.58 and 58,285.74

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Solution

The fourth proportional to 100,735.42, 139,019.58 and 58,285.74 is: 80,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,735.42 : 139,019.58 = 58,285.74 : x
  2. Step 2: Convert to fraction form
    100,735.42/139,019.58 = 58,285.74/x
  3. Step 3: Cross multiply
    100,735.42x = 139,019.58 × 58,285.74
  4. Step 4: Simplify right side
    100,735.42x = 8,102,859,094.79
  5. Step 5: Solve for x
    x = 8,102,859,094.79/100,735.42
  6. Step 6: Final answer
    x = 80,437.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.